Apparatus for developing muscles



FIG. 1 is a top, front perspective view of an apparatus for developing muscles showing our new design;

FIG. 2 is a bottom, rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left-side elevation view thereof;

FIG. 6 is a right-side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown in FIGS. 1-8 depict portions of the apparatus for developing muscles that form no part of the claimed design. 

CLAIM The ornamental design for an apparatus for developing muscles, as shown and described. 